如何检查用户在 android 中使用 intent 创建的卸载对话框中单击了什么？

Question

我正在尝试创建一个能够卸载其他已安装应用程序的应用程序。因此，当我使用卸载意图时，打开的对话框要求确定或取消。那么我如何才能知道用户是选择了确定还是取消，因为我需要隐藏按下的卸载按钮。分配为代码末尾 public class viewholder 中的按钮

public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder>  {
MainActivity mainActivity=new MainActivity();
private Context mContext;
List<Drawable> images;
List<String> titles;
List<String> apps;
LayoutInflater inflater;

public void uninstallAPK(String apkPackageName) {
    Intent intent = new Intent(Intent.ACTION_DELETE);
    intent.setData(Uri.parse("package:" + apkPackageName));
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
    mContext.startActivity(intent);
}

private void goToUrl (String url) {
    Uri uriUrl = Uri.parse(url);
    Intent launchBrowser = new Intent(Intent.ACTION_VIEW, uriUrl);
    launchBrowser.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    launchBrowser.putExtra(Intent.EXTRA_RETURN_RESULT, true);
    mContext.startActivity(launchBrowser);
    mainActivity.finish();
}


public Adapter(Context ctx, List<String> titles, List<Drawable> 
images,List<String> apps){
    this.titles =titles;
    this.images = images;
    this.apps = apps;
    this.inflater =LayoutInflater.from(ctx);
    mContext = ctx;
}



@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int 
viewType) {
    View view = inflater.inflate(R.layout.custom_grid_layout,parent,false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int 
position) {
    holder.title.setText(titles.get(position));
    holder.gridIcon.setImageDrawable(images.get(position));
}

@Override
public int getItemCount() {
    return titles.size();
}

public class ViewHolder extends RecyclerView.ViewHolder{
    ImageView gridIcon;
    TextView title;
    Button button;
    Button button3;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        title = itemView.findViewById(R.id.textView);
        gridIcon = itemView.findViewById(R.id.imageView2);
        button = itemView.findViewById(R.id.button);
        button3 = itemView.findViewById(R.id.button3);

        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                uninstallAPK(apps.get(getAdapterPosition()));
                //want to hide the button if ok is pressed otherwise want 
                to show the button
            }


        });
        button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final ParseQuery<ParseObject> linkwa = new 
                ParseQuery<ParseObject>("package");
                linkwa.whereEqualTo("packid", 
                apps.get(getAdapterPosition()));
                linkwa.findInBackground(new FindCallback<ParseObject>() {
                    @Override
                    public void done(List<ParseObject> objects, 
                    ParseException e) {
                        if(e==null && objects.size()>0){
                            for (ParseObject object:objects){
                                goToUrl(object.getString("link"));
                            }
                        }
                    }
                });
            }
        });



    }
}

}

Answer 1

真的不知道你的实现情况如何，但理想情况下我会有两个按钮。一个用于取消，另一个用于卸载。而且我会在两个按钮上设置 clicklistener。因此，无论何时执行 onclickListener，都意味着用户按下了对话框的按钮。所以，第一件事，我会关闭对话框，第二件事基于用户点击的按钮

public void onClick(View v){
   if(v.getId == R.id.btn_dialog_uninstall){
      uninstallPackage("package_name");
      dialog.dissmiss();
   }else{
    dialog.dissmiss(); // user pressed cancelled;
 }

希望对您有所帮助。

Answer 2

实际上有一个解决方法，您可以尝试一下

StartActivityFotResult 这将确保您将在 onActivityResult

中获得回调

public void uninstallAPK(String apkPackageName) {
     Intent intent = new Intent(Intent.ACTION_DELETE);
     intent.setData(Uri.parse("package:" + apkPackageName));
     intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
     mContext.startActivityForResult(intent, 12345);

 }

现在可以查看Result-Code是否成功RESULT_OK或RESULT_CANCELLED

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 super.onActivityResult(requestCode, resultCode, data);

 if (requestCode == 1234) {
     if(resultCode == Activity.RESULT_OK){
         //Deleted
     }
     if (resultCode == Activity.RESULT_CANCELED) {
         //Dismissed
     }
 }
}//onActivityResult

2.1。如果上述解决方案不起作用则

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == 1234) {
        if (appInstalledOrNot("required_app_package_name")){
           // Dismissed
        }else { 
           //Deleted
        }
    }
}//onActivityResult


private boolean appInstalledOrNot(String uri) {
        PackageManager pm = getPackageManager();
        try {
            pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
            return true;
        } catch (PackageManager.NameNotFoundException e) {
        }

        return false;
    }

PS。检查应用程序是否已安装取自 here

如何检查用户在 android 中使用 intent 创建的卸载对话框中单击了什么？

How to check what the user clicked on uninstall dialog box created using intent in android?

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android-studio